Phase Transformation and Mechanical Properties of PH Stainless Steel by Different Aging Methods Coupling subzero Treatment (II)

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Project title

Code/計畫編號

MOST110-2221-E019-082

Translated Name/計畫中文名

不同時效方法耦合深冷處理對析出硬化不銹鋼的相變態及機械性能探討 (II)

Project Coordinator/計畫主持人

Shing-Hoa Wang

Funding Organization/主管機關

National Science and Technology Council

Department/Unit

Department of Mechanical and Mechatronic Engineering

Website

https://www.grb.gov.tw/search/planDetail?id=14112951

Year

2021

Start date/計畫起

01-08-2021

Expected Completion/計畫迄

31-07-2022

Bugetid/研究經費

1439千元

ResearchField/研究領域

材料科技

首創雙相及習知單相，析出硬化型不銹鋼，經不同時效方法：恆溫時效、熱循環時效及潛變時效(creep aging)，各所產生的不同複雜微觀組織之組成，會影響其機械性質及行為，尚無報導。探討有/無高溫delta肥粒鐵含奈米銅粒，lath麻田散鐵基地相含微米雙晶，奈米銅粒析出，及回逆γ變態，結晶方位等，對降服強度，抗拉強度，延伸率，應變硬化率，應變硬化指數，韌性等效益評估。石化工廠，氣渦輪機及電廠反應器及高溫管件，一般均以析出硬化不銹鋼為主。若能經特殊的creep aging及熱循環時效，創造出高強度及高韌性的析出硬化不銹鋼，經濟上創造附加價值，學術上新相變態機制發現，是次世代先進材料的課題。

Keyword(s)

應變硬化率
應變硬化指數
潛變時效
奈米ε-銅
回逆沃思田鐵
變形誘發相變態
strain hardening rate
strain hardening exponent
creep aging
nano ε-Cu
inverted austenite
deformation induced transformation

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Phase Transformation and Mechanical Properties of PH Stainless Steel by Different Aging Methods Coupling subzero Treatment (II)

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